Mattress-sewing machine.



No. 70|,749. Patented .Iune 3, |902. H. S. MARTIN.

MATTRESS SEWING MACHINE.

(Application ililed No'. 12, 1896.) (No Model.) 2 Sheets-Sheet I.

No. 70u49.

Patented Iune 3, |902.

H. S. MARTIN.

MATTRESS SEWING MACHINE.

(No Model) (Application filed Nov. 12, 1896.)

2 Sheets-Sheet 2.

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UNITED STATES PATENT OFFICE.

HARRIsoNs. MARTIN, OF WASHINGTON, IJIsTRIor OF COLUMBIA.

MATTRESS-SEWING MACHINE.

SPECIFICATION forming part of' Letters Patent N o. 701,749, dated J' une3, 1902.

Application filed November 12, 1896. Serial No. 611,896. (No model.)

To all whom, it may concern.-

Be it known that I, HARRISON S. MARTIN, a citizen of the United States,residing at TWashington, in the District of Columbia, have inventedcertain newand useful Improvements in Mattress-Sewing Machines; and I dohereby declare the following to bea full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to improvements in sewing-machines, and moreparticularly to that class of sewing-machines termed spes cial.anddesigned. for stitching the edges of Like numerals of reference indicatelike parts in all the gures of the drawings.

A rest or table 1 is supported at the side of a suitable stand orframework 2, the restor table being designed to support the mattress inproper relative position 'to the machine hereinafter described.Immediately above the framework 2 and supported thereby is a pair ofparallel track-rails'3, which-are of a length equaling or exceediug'thelength ofa mattress. Mounted for movement back and forth upon thesetrack-rails 3 is a housing 4.,

preferably of the shape shown and provided at its lower end withsuitable hook-shaped eyes or travelers 5 for loosely receiving the` Inorder to reduce fric` aforesaid track-rails. tion, groovedwheels may besubstituted for the eyes. The frontjwallof the housing is provided atits lower portion with an angular plate 6, designed to fit overv andloosely embrace tlie upper` corner of the mattress that is to be sewed.This plate is provided with openings 7, arranged in the are of the sameIstitch by the curved 'needle 17. llooper, as 24, which is of theWheeler &Wil

circle, and immediately above and in line with the openings is thehollowmachine-head 8. This machine-head 8 is slotted at one side, as at 9, andat its inner side, as at 10, and designed for movement within the headis the inner end of the needle-carrying lever 11, the opposite end Ofwhich is fulcrumed, as at 12, inthe rear end of the housing. It istherefore obvious that the machine-head 8 and the openings 7 in theangular plate 6 are in the arc of vthe circle the'center of which is thepoint ofrfulcrum 12 of the lever 11. In its movements thelever 11vibrates in the slot 10, and a vpull-oft' 13 of ordinary constructionand which is fixed to the end of the lever 11 moves in the slot 9.

In suitable brackets 14. that project from the head 8 of the machine issupported the `spool 15 of sewing-cord, any ordinary tensiondevice'being provided. VA guide-eye 16 projects fromV the side of themachine-head, and through it the sewing-cord passes after hav- ,ing beenpassed around the pull-off 1'3. The

leading end of the cord is of course then passed through the eye of theneedle 17, which is secured in a suitable socketformed in the head 18 ofthe lever 11, and such needle, it will be observed, is curved orarc-shapedand designed to pass through the openings 7 in the plate 6.

Journaled in the opposite side Walls of the housing 4 is a shaft 19, andarranged on said shaft so as to move with the same is a beveled gear 20.Near one end the shaft has formed therein a cranked portion 2l, andloosely connected with said crank is a pitmankrod 22, the upper end ofwhich is forked and loosely pivoted, as at 23, to the lever 11, so that,as will beobvious, each rotation of the shaftY 19 will cause a completereciprocation of the `pitman-rod 22, a complete vibration of the lever11, anda reciprocation or complete Any suitable sonv pattern, maybefiXedto the shaft 19 and designed to carry a bobbin', asis usual in thisclass of machines.. y W

y It will be observed fromtheforegoing description that thezmachineis'intended to be ,fed along the track-rails 3, 'and I'wish to say atthis point that any suitable mechanism IOO may be employed for feedingthe machine and giving motion to its various parts. In thepresentinstance I journal in the housing at a right angle to the shaft19 a power-shaft 26, at the inner end of which a beveled gear 27 islocated and adapted to move therewith, and inasmuch as it intel-mesheswith the gear 2O of the shaft l() said shaft and gear and parts operatedby the shaft receive motion. This shaft 2G may be driven by hand, but Iprefer to locate upon the same a grooved pulley 28, and at oppositesides and below said pulley to journal in line therewith companionguide-pulleys 29. The latter pulleys are supported in the presentinstance upon hanger-brackets 30, the upper ends of which may form, asherein shown, the bearings for the shaft 19. At opposite ends of theframework 2 and below the plane of the pulleys 29 and in alinementtherewith are end pulleys 3l, one of which is designed to be driven byany suitable motor. The opposite pulley 31, like the pulleys 29, aremere guide-pulleys or idlers. Around the pulley 28, under the pulleys29, and around the pulleys 3l is passed an endless belt, by which motionis imparted to the pulley 2S and its shaft as the powerpulley 3l isdriven. This also causes a movement or feeding of the machine as well asan operation of its parts.

In operation the filled mattress is laid upon the table l, which bringsits edge that is to be boxed by sewing under the angular plate G. Thecorner edges of the tick are successively presented to the action of themachine, after which it is simply necessary to start the machine. Thesewing, it will be seen, is on an oblique line through the top and sideof the mattress, thus forming a rolled or box edge that greatly enhancesthe durability and appearance of the finished mattress and hasheretofore greatlyincreased the cost, as it had to be done by hand. Bymy machine, however, the rolled or boxed edge is produced at a minimumcost and by a machine composed of very few parts that are easily andcheaply constructed and replaced.

I do not limit my invention to the precise details of constructionherein shown and described, but hold that I may vary the same to anydegree within the knowledge of the skilled mechanic without departingfrom the spirit and principle of my invention-as, for example, insteadof employing a curved needle and curved guide for the same I may, asshown in Fig. 3, employ an inclined needle 33, mounting the same in aninclined guide 34, having the characteristics heretofore described. Theneedle is reciprocated by the arm 36, which is connected to the head 35,that carries the needle, and at its opposite end to the crank-shaftheretofore described. It will therefore be understood that by the terminclined needle as used in the claims I mean either curved or straight,but so disposed as to pass through the horizontal and vertical surfacesforming the corners of the mattress.

Having described my invention, what I claim is- 1. The combination witha horizontal rest or table to support the lower edge of a mattress, andtracks arranged at one side thereof, of a sewing-machine mounted on saidtracks and having an angular guide-plate overhanging said rest or tableto receive the upper,inner corner of a mattress; obliquely-alinedneedleapertures being formed in the vertical and horizontal members ofsaid guide-plate, a pivoted vertically-vibrating lever having aneedle-head at its outer end above said guideplate and provided with aneedle to pass through said apertures and vstitch the upper inner cornerof a mattress, a looper adjacent to the lower inner aperture, and meansfor operating and feeding the machine, substantially as specified.

2. In a machine of the class described, the combination with a frameworkhaving a track, of a machine-housing mounted for movement upon the trackand having an overhanging right-angular plate at its lower front edge, alever fulcrnmed at its upper end in the rear end of the housing and atits front end having a needle-carrying head, a hollow machine-headcoincidentally curved with relation to the pivot of the lever and inline with needle-openings in the plate and serving as a guide for theneedle-carrying head, a shaft journaled in the housing, a looper carriedby the shaft and arranged adjacent to the path traversed by the needle,a crank formed in the shaft and a pitman-rod loosely connected to thecrank and to the lever, and means for rotating the shaft and advancingthe machine, substantially as specified.

3. In a machine of the class described, the combination with a housingprovided at its lower front part with an angular plate having openingsat opposite sides of its angle and above the same having a hollow,slotted machine-head, a needle-carrying head arranged in the latter, alever fulcrumed in the housing and connected to and adapted to operatethe needle-carrying head, a transverse shaft journaled in the housing inrear of the angular plate, means for conveying motion from the same tothe lever for vibrating the latter, a looper arranged on the shaftadjacent to the lower needle-opening in the angular plate, and eyes onthe lower end of the housing for loosely receiving the track, of apower-shaft journaled at an angle to the horizontal shaft, a gear-wheelon each of said shafts and intermeshing with each other and means fordriving the power-shaft and advancing the machine, substantially asspecified.

4. The combination with a rest-table to support the lower edge of amattress, and tracks arranged parallel thereto and at one side thereof,of a sewing-machine having an angular portion arranged above andoverhang- IOO IIO

ing said rest-table, said angular portion being provided withobliquely-alined openings,

a needle-carrying head arranged in the maif chine and provided with aneedle, said needle-carrying head being inclined downwardly and inwardlywith relation to the talole,v whereby the needle is adaptedto passthrough the oblique openingsand stitch through the upper corner of themattress, a looper coperating with the needle, and means for operl roating said needle and looper.

In testimony whereof I affix my signature in presence of two witnesses.

HARRISON S. MARTIN.

`Witnesses:

W. S. DUVALL, FRANK D. BLACKISTONE.

